I think that having /e/ running on the Teracube or upcoming Teracube 2e would fit really well. Both phones have replaceable batteries and are big on DIY repairability. Two things that kind of fit well with the FOSS mindset. Not sure if anybody in a position to do so have heard about these yet so I figured I would bring it up.
Regain your privacy! Adopt /e/ the unGoogled mobile OS and online services